The AD Scientific Index (Alper-Doger Scientific Index) provides the most comprehensive analysis across 13 main fields and 211 sub-branches at global, national, and regional levels. These analyses are based on indicators such as the H-index, i10-index, and citation count, including their values from the last 5 years. As of Jan 08, 2026, the rankings are determined according to the Total H Index. BETA VERSION: The subject field rankings for the world, regions, countries, and universities are currently in their Beta phase. This is due to the exclusion of (1.131.927) scientists categorized under ‘Others’, whose profiles have yet to be determined, edited, or classified. As updates are made to these fields, the rankings will be adjusted accordingly. Note: Please keep this in mind while reviewing the rankings. For further details, explore our [University Subject Rankings].
Rankings
Gas storage | CO2 capture | Gas hydrate inhibitors | Corrosion inhibitors | EO
H-Index Metrics
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H-Index35
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i10 Index56
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Citation Counts2,921
Rankings
Petroleum engineering | Unconventional oil | Aquathermolysis | Heavy and extra-heavy oil
H-Index Metrics
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H-Index35
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i10 Index110
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Citation Counts3,708
Rankings
Diamonds | Kimberlites | Mineralogy | Geochemistry | Petrolog
H-Index Metrics
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H-Index35
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i10 Index73
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Citation Counts5,440
Rankings
Enhanced Oil Recovery | Development of Carbonate Reservoirs | Petroleum Engineering | Hydraulic Fracturing | Acid Treatment
H-Index Metrics
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H-Index29
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i10 Index93
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Citation Counts2,992
Rankings
Petroleum & Reservoir Engineering | Oil Production Technologies | Enhanced Oil Recovery | Hydrauli
H-Index Metrics
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H-Index17
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i10 Index18
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Citation Counts655
Rankings
Разведка и разработка залежей нефти и газа в трещиноватых коллектор
H-Index Metrics
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H-Index17
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i10 Index32
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Citation Counts1,625
Rankings
Petroleum Engineering | Arctic Oil and Gas Resources Developmen
H-Index Metrics
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H-Index17
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i10 Index39
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Citation Counts1,124
Rankings
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Geology-Volcanology | Plate Tectonics | Igneous Petrolog
H-Index Metrics
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H-Index13
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i10 Index15
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Citation Counts545
Rankings
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Rankings
Chemical EOR | Gas EOR | Surfactant flooding | hydraulic fracturing | microfluidic
H-Index Metrics
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H-Index9
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i10 Index9
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Citation Counts328
Rankings
Islamic finance | Ethical finance | Islamic moral econom
H-Index Metrics
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H-Index8
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i10 Index5
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Citation Counts197
Rankings
Rankings
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Rankings
sedimentology | machine vision | machine learning | deep learnin
H-Index Metrics
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H-Index7
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i10 Index4
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Citation Counts256
Rankings
Petroleum engineering | Aviation engineering | Aquathermolysis | Asphaltenes and resin
H-Index Metrics
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H-Index6
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i10 Index6
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Citation Counts221
Rankings
Rankings
Rankings
Reservoir geomechanic | Petroleum engineering | Numercial modeling | Nonlinear process modelin
H-Index Metrics
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H-Index6
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i10 Index4
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Citation Counts128
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